Trace Elements

Question 1

Key sources?

Answer 1

Fluvial / atmospheric / hydrothermal / recycling of particles

Question 2

Elements entering from rivers?

Answer 2

> 90% of the particulate load is trapped in estuaries

floods and storms will move a huge quantity of sediments

Question 3

Anthropogenic elements?

Answer 3

pollutant in origin eg power station chimney particles

Question 4

Hydrothermal vents?

Answer 4

Iron, manganese oxides

Question 5

Conservative behavior?

Answer 5

Na, Li, Cs

Question 6

Nutrient behavior?

Answer 6

Zn, N, Cd

Question 7

Scavenging or depth depletion behavior?

Answer 7

Fe, Cu, Pb

Question 8

Where does the caesium come from?

Answer 8

Reprocessing of nuclear waste - Cumbria and Normandy